Watch shocking moment Man Utd fans FIGHT each other in stands at tense Old Trafford during horror defeat to Brighton
THIS is the shocking moment a brawl erupted between Manchester United fans at Old Trafford.
The scrap broke out as the Red Devils crashed to a 2-1 opening day defeat against Brighton.
A video posted on social media showed two men grappling in the South Stand as the game carried on in the background.
Stunned onlookers attempted to get involved by trying to break up the unsightly melee.
The short clip ended with the two men squaring up to each while shouting in front of dozens of supporters.
It is unclear what triggered the fight between the pair.
But neither will have been happy with the end result at the Theatre of Dreams.
Erik ten Hag was hoping to mark his first-ever Premier League game with a morale-boosting win.
But the day turned into a nightmare for United as two goals from Pascal Gross put Brighton on course for a historic win at Old Trafford.
Red Devils fans have only just got over the 4-0 stuffing at the Amex late last season.
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And United were miles off the pace as their flops failed to deliver the goods yet again.
Some irate fans staged a protest against the Glazer ownership before the game.
And United’s farcical transfer window has gone from bad to worse after it emerged they are trying to sign 33-year-old Marko Arnautovic from Italian minnows Bologna.
Meanwhile, Ten Hag has told warring fans not to expect a quick fix on the pitch.
He said: “It is a hell of a job. We have to work really hard, analyse then move forward.
“We have to take the lessons and learn quickly from it. We don’t have time and we have to deliver.
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“I think also with these players we could also have done it better.
“I knew it could happen but I think we should have done better – that is clear but I know also it will not come overnight.”